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<!DOCTYPE html> <html> <title>JavaScript Object 对象方法示例 - 基础教程(div.cn)</title> <body> <h1>Object.defineProperty()</h1> <p id="output"></p> <script> var counter = {i : 0}; Object.defineProperty(counter, "increment", { get: function() {this.i++;}, }); Object.defineProperty(counter, "decrement", { get: function() {this.i--;}, }); Object.defineProperty(counter, "reset", { get: function() {this.i = 0;}, }); Object.defineProperty(counter, "add", { set: function (value) {this.i += value;} }); Object.defineProperty(counter, "subtract", { set: function (value) {this.i -= value;} }); counter.reset; counter.add = 25; counter.increment; document.getElementById("output").innerHTML = counter.i; </script> </body> </html>
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